Improvement in rakes for harvesters



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:PATENT OFFICE.

JOHN rIAYLOn, on MAGNOLIA, ILLINoIs M PaovEM ENT :IN 4RAKES FOR H ARVESTERS.

Specification formingpart' of Letters Patent No. 35,270, ldated May 13, 1862.

Be it known that, I, JOHN TAYLOR, of Magnolia, in the county of Putnam and State of Illinois, have invented certain new anduseful y Improvements in the Baking Attachments o f Harvesters or Grain-Cutting Machines;4 and lI do hereby declare that the following is a description thereof in terms which now seem to -Ine to be suiciently full, clear, and exact, reference being had to the annexed drawings,

' making a part of this specification, in which- Figure l is arear elevation 5 and Fig.2, a

vertical section in the lineI s x' of Fig; l, look- Vingtowardtlfxe right, as indicated by the arrow. y I

yThe nature of my invention consists inincreasing the radius'of the circle described by the operatingcrank as it passes forward overV 4thegrain, -so as to pass entirely clear of it without at4 the same time .throwing the rake toofar forwardortoo far in the rear. To enable others skilled in the art to make -and'use my invention, I will proceed 'to'describe its construction and operation. -v

I use -a concave platform-nas represented at A, from the rearsil1,"B, of which risethe ,standards C C. I Two other standards, D D',

only one of vwhich is seen in the drawings, are erected from the two 'cross-ties, E E', ofthe vplatform from near the center of their lengths.

, cross-bars F F', and are provided with boxes b b' for thel rock-shaft H, to which are bolted the two arms cbc', which reach forwardjand are jointed tothe upper ends of the two armsv I I'. of the rake-head J by means Aof-the rod d.

These two arms I I' are slotted transversely to the line of draft-of the machine; or they may 'be providedwith slotted `or mortised boxes',

one of which is seen at e', Fig. 2,'through which passes the crank-pin of `the crank G. A cross.

bar, K, connects the two arms I I', to the un` der side of which are attached the blocks ff', against which bear intermittently the cams L 'L' on the crank-pinV of the crank-shaft G.

The operation of this 'rake attachment is as follows: Motion being communicated to the crank-shaft by means Vof the belt M, passing round the pulleys N on the crank-shaft and .N' on the main driving-wheel I), the rake isset in motion; and supposingV it to have ar rv'ed at the point shown in the drawings,

a'gavel from the platform, it will be seen that the cams L Lare not in contact with their bearing-blocks f f', and that the crank-pin is in the lower end of the slots in the arms I I of the rake-frame. As, therefore, the rake progresses rearwardly,it is at liberty to follow the curve of the platform, which it does-by virtue of its own gravity until it has lentirely removed the gavel, at which moment the cams are brought into contact with the bearingblocks, 4when the rake is gradually'elevated thereby until it' passes forward entirely clear of the-grain on the platform. At this point the cams begin to fall, the rakefallin' with them until it rests upon the grain, w en it again commences `its rearward motion, sliding upon the surface of the platform and carrying with it the succeeding gavel;

The advantages of my invention are that by the useI of the cams I vary the range of motion of the rake communicated by the crank alone in suehza manner that theradius of the circle describedI th erebyvisincreased asthe rake passes forward over` the Vgrain on the platform,

and thereforepasses entirely clear of y It is` true that the crank lalone `might be so increased in its radius as to do this; but then the circle described would be such that the rake would reach too far forward or too far'in the rear.l u I do not in al1 cases confine myself .to the use o f a curved platform,` for it is obvious that the crank, cams, and slotted rake-arms-are applicable also to a plane platform. .l l

`Having thus described my invention and pointed out the manner in which it operates, what I claim therein as new, and desire to se'- eure by Letters Iatent of the UnitedI States,

1. The rake frame provided with slotted arms I I and the cross-'bar K, in combination with the crank-shaftG and cams L L', as and for the purposes set for-th.

2. The rake J, provided withslotted arms` I I and the cross-bar K, and hinged to the arms c c', which are attached to the rock-,shaft H, in combination with the crank G and cams "L L', when' these` several parts are arranged- 'for operation in connection with each `other ner and for the purpo'sespecified.

JOHN TAYLOR. l Witnesses:

N. H. Snr'rs, S.' J. TAYLOR.

w @mi n @Tint where it is represented as in the act of'raking l and with the concave platform A, in the man- Erb 

